Improvement in marble planing and carving  machines



2 Sheets--Sheet 2.

G. A. HALEY.

Marhl'e-Plani'hg and. Ga ning-Machines.

'Patented 1160.10, 1872' [a 7/ e )2 for PATENT QEErcE.

GEORGE A. HALEY, OF CHICAGO, ILLINOIS.

IMPROVEMENT IN MARBLE PLANING AND CARVING MACHINES.

Specification forming part of Letters Patent No. 133,704, dated December 10, 1872.

To all whom it may concern.-

Be it known that I, GEORGE AgHALEY, of Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in a Universal Marble Planing and Carving Machine; and I do declare that the following is a true and accurate description thereof, reference being had to the accompanying drawing and to the letters of reference marked thereon and being a part of this specification, in which-- Figure 1, Sheet 1, is a central longitudinal section of the machine taken on the'line w w in Fig. 3. Fig. 2 is an elevation of the machine, showing the right-hand end of Fig.1. Fig. 3, Sheet 2, is a top plan of. the machine. Fig. 4 is a cross-section of the top of the tool-holder taken on y 'l in Fig. 5, which is a longitudinal section of t e same on 2 z in Fig. 4; and Fig. 6 is a bottom plan of the lower table or former, to the top of which the marble slab to be worked is fastened. v

Like letters refer to like parts in each figure. I

The nature of this invention relates to a machine for planing the surfaces of marble slabs and for planing or cutting in them grooves or recesses of regular or irregular outline, but is more especially designed for cutting the grooves around the edges of the marble slabs used as stationary wash-stand tops. The invention consists in the peculiar construction and arrangement of the mechanism for revolving the former-table, which carries the marble slab; in the peculiar construction of the tool-holder and the means employed to cause it to present the face of the cuttingtool in the line of the advancing work; also, in the mechanism for raising and lowering the tool-table and its guide-former; in the arrangement of the cross-feed or adjustment of the tool-holder; and in the general construction and arrangement of the machine in its various parts, as more fully hereinafter set forth.

In the drawing, A are the four corner-posts of Inymachine, which, with the upper girts A and lower girts A form the frame thereof. Across the ends of the frame two webbed girders, A are incorporated therein, which girders carry the ends of two longitudinal ways, a at, whose lateral websmay also be extended at the cor- 11ers and be incorporated in the main frame.

B is the driving-shaft, journaled in the cor ner-post and a bracket extending nearly half way across the end, where it carries a bevelgear, 0; the other or outer end carries the usual fast and loose pulleys, through which the said shaft may be put in motion.- The gear 0 meshes with a pinion, G on a vertical shaft, D, journaled through bearings in the girder A and in a step in the lower girt, carrying a pinion, E, at a point near the upper end of c said shaft, which, at the upper extremity, carries a friction-roller, b, Fig. 1. F is a table, sliding on the ways a, and having a yoke or bridge tree, 0, bolted across its under side, having the spindle of bevel-gear wheel G stepped in' it. The hub of this gear is of considerable diameter, and is journaled in a circular opening in the table F above it, as seen in Fig.1. To the upper end of the hub is secured'a former, H, Fig. 6, having in the present instance the general outline, andof the same size in area, or larger even, than the slab for awash-stand usually placed in the corner of a room. The former is cut away where the sharp back corner in the slab would come, andis rounded in graceful curves at that point. The periphery is formed underneath in a pendent flange, in which is out a cam-groove, cl, and on the inner edge of the flange is cut a'cam gear, e, into which projects the friction-roller b on the shaft D, while the pinion E meshes with the cam-gear e under the former. The driving-shaft being put in motion the former will be rotated on its table, asalso the bevel-gear G, the friction-wheel in the cam-groove moving the table to and fro on its waysto keep the gear of the former in mesh with the pinion. The slab of marble to be worked is secured to the former by dogs or chucks in any convenient manner. Said slab is shown at I in Figs. 1 and 2. In a bracket, pendent from the table F, is journaled a bevel-pinion, f, meshingwith the gear G. To this pinion is attached a square shaft, J, sliding in a square socket in a bevel-gear, g horizontally journaled in a bracket at the end of the frame, where it meshes with and gives motion to a pinion, f, at the lower end of a vertical shaft, K, which is squared and slides in the socket of a bevel-gear, h, journaled in a bracket at the end of the upper table L, and which gear h meshes with a pinion, h, horizontally journaled in a box at the end of said table. Through the pinion h a square shaft, J, slides, whose other end carries a pinion, 'i, journaled ,in a box at the end of a block, M, sliding in a longitudinal slot in the upper table L, said slot being shown in Fig. 3. In the block M is journaled a bevelgear, N, with which the pinion i meshes, and to the upper surface of said gear N is secured a guide, 0, coinciding in outline and relative position, but of less size than the former H below. This guide has formed in its under side, at the edge, a cam-groove, j, having the same outline as that in the former below. The guide 0 rotates in unison with the former through the medium of the train of gears just described, driven by the gear-wheel under said former. The guide and its block M also have a longitudinal movement on the upper table, which may also be raised and lowered in the following manner: The corner posts of the frame have ways formed on their inner faces to serve as guides for the corners of said table. At the corners of the top girts of the frame a screw, 1?, is journaled in each, with a bevel-gear, Q, secured to the top of each screw, which is also tapped through the corner of the table below. A feed-shaft, It, is journaled along the top of one end of the frame, with a bevel pinion, k, secured to it near each end, meshing with the two bevel-gears Q of that end of the machine, from which motion is given to the other two screws through two secondary feed-shafts, R and pinions k k k W. The feed-shaft B is rotated by a handwheel, R which moves the feed-screws simultaneously to raise or lower the table. The gear h, sliding on the shaft K, permits this movement of the table up or down. S, Figs. 1 and 3, is a block sliding in the slot of the upper table, and in it is journaled the shank T of the tool-carrier, to the lower end of which is clamped a planer-tool, m, 'Figs. 1 and -2. The

shank carries at the top an elongated head, T,

having a longitudinal dovetail way in which are inserted the bases of two studs, n, adjusted to or from each other by set-screws 0, at

I the ends of the head. The studs have each a friction-roller, n, sleeved on them, which projects into the cam-groove j of the guide 0, in the rotation of which the point of the tool changes direction with the cam-groove of the guide, and thus is always presented squarely to the work, however irregular in outline it may be, except, of course, its inability to turn a sharp angle, for which reason the cam-grooves to, by the rotation of which hand-wheel the screw and attached block are moved in or out to adjust the tool over the work, the feed and depth of out being regulated by the feedscrews.

As will be seen, the marble to be grooved revolves with the lower former, while the tool remains stationary, except to change the direction of its point in following the guide, which corresponds. in its movements with those of the former. The squared shafts playing through their pinions allow the moving parts to adjust themselves to their various positions whilerotating. Any desired number of formers and corresponding guides of various forms and sizes may be used with the machine, and for this reason the roller-studs at the head of the tool-holder are made adj ustable. The machine may also be used for surfacing slabs, in which case the former and guide are circular and revolve the slab, as in a lathe.

What I claim as my invention, and desire to secure by Letters Patent, is-- 1. The shaft D, gear E, and cam-gear e, the former H provided with the cam-gro ove d, and the table F sliding on the Ways a a, all arranged to operate said table and former, substantially as and for the purpose set forth.

2. The combination, with the table F and former H, of the vertically-adjustable upper table L, carrying an adjustable planer-tool, as set forth. I

3. The combination, with the table L and former H, of the gears G, g, f, h, h, 'i, and N, and the shafts J, K, and J, and block M, for rotating the guide 0, as shown and set forth.

4. The guide 0, rotating in unison with the former H, the block S, the tool-holder T T, provided with the studs a at, playing in the cam-groove j of said guide 0, all being arranged to present the point of the tool to the work, as shown and set forth.

5. The screw U and hand-wheel V, for horizontally adjusting the blocks M and S, and their attachments, substantially as described.

- GEORGE A. HALEY.

Witnesses:

WM. H. Low, 0120. W. FERRrs, 

